422539 has 4 divisors (see below), whose sum is σ = 455056. Its totient is φ = 390024.

The previous prime is 422537. The next prime is 422549. The reversal of 422539 is 935224.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 422539 - 2¹ = 422537 is a prime.

It is a super-3 number, since 3×422539³ = 226319333352530457, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16239 + ... + 16264.

It is an arithmetic number, because the mean of its divisors is an integer number (113764).

2⁴²²⁵³⁹ is an apocalyptic number.

422539 is a deficient number, since it is larger than the sum of its proper divisors (32517).

422539 is a wasteful number, since it uses less digits than its factorization.

422539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32516.

The product of its digits is 2160, while the sum is 25.

The square root of 422539 is about 650.0299993077. The cubic root of 422539 is about 75.0393275225.

It can be divided in two parts, 422 and 539, that added together give a square (961 = 31²).

The spelling of 422539 in words is "four hundred twenty-two thousand, five hundred thirty-nine".